Al Spalding has won the most games by a rookie, with 47 wins in 1876.

Interpreted as:

most regular-season wins by rookie pitcher

	NAME	W	SEASON	TM	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Al Spalding A. Spalding	47	1876	CWS	12	.797	61	60	1.75	39	53	8	0	528.2	542	103	226	6	26		2	2,219	1	0.66	0.44	1.50	0.10	1.8	1.2	1.07		3.85	73	2.38	99	9.23	9
2	George Bradley G. Bradley	45	1876	STL	19	.703	64	64	1.23	103	63	16	0	573.0	470	78	229	3	38		0	2,269	34	1.62	0.60	2.71	0.05	4.5	1.7	0.89		3.60	58	2.14	101	7.38	-20.7
3	Larry Corcoran L. Corcoran	43	1880	CWS	14	.754	63	60	1.95	268	57	4	2	536.1	404	116	218	6	99		3	2,133	19	4.50	1.66	2.71	0.10	12.6	4.6	0.94		3.66	80	2.23	91	6.78	16.5
4	Pud Galvin P. Galvin	37	1879	BUF	27	.578	66	66	2.28	136	65	6	0	593.0	585	150	299	3	31		0	2,436	23	2.06	0.47	4.39	0.05	5.6	1.3	1.04		4.54	89	2.50	98	8.88	6.4
5	Ed Morris E. Morris	34	1884	COL	13	.723	52	52	2.18	302	47	3	0	429.2	335	104	159	3	51	13	0	1,703	22	6.33	1.07	5.92	0.06	17.7	3.0	0.90	.249	3.33	71	2.41	80	7.02	23.3
6	Mickey Welch M. Welch	34	1880	TRO	30	.531	65	64	2.54	123	64	4	0	574.0	575	162	321	7	80		1	2,387	26	1.93	1.25	1.54	0.11	5.2	3.4	1.14		5.03	103	2.68	109	9.02	-7.1
7	Jesse Duryea J. Duryea	32	1889	CIN	19	.627	53	48	2.56	183	38	2	1	401.0	372	114	208	9	127	16	5	1,704	21	4.11	2.85	1.44	0.20	10.7	7.5	1.24	.265	4.67	66	3.45	89	8.35	19.3
8	Silver King S. King	32	1887	STL	12	.727	46	44	3.78	128	43	2	1	390.0	401	164	231	4	109	17	2	1,666	19	2.95	2.52	1.17	0.09	7.7	6.5	1.31	.282	5.33	86	3.72	88	9.25	24.9
9	Lee Richmond L. Richmond	32	1880	WOR	32	.500	74	66	2.15	243	57	5	3	590.2	541	141	278	7	74		9	2,410	29	3.70	1.13	3.28	0.11	10.1	3.1	1.04		4.24	85	2.24	88	8.24	28.7
10	Bill Hoffer B. Hoffer	31	1895	BAL	6	.838	41	38	3.21	80	32	4	0	314.0	296	112	146	9	124	19	3	1,349	3	2.29	3.55	0.65	0.26	5.9	9.2	1.34	.257	4.18	67	4.81	101	8.48	-1.3
11	Jim Whitney J. Whitney	31	1881	BOS	33	.484	66	63	2.48	162	57	6	0	552.1	548	152	284	6	90		3	2,301	46	2.64	1.47	1.80	0.10	7.0	3.9	1.16		4.63	90	2.73	99	8.93	-0.4
12	Tommy Bond T. Bond	31	1876	HAR	13	.705	45	45	1.68	88	45	6	0	408.0	355	76	164	2	13		0	1,623	8	1.94	0.29	6.77	0.04	5.4	0.8	0.90		3.62	69	1.96	81	7.83	27.5
13	Tony Mullane T. Mullane	30	1882	LOU	24	.556	55	55	1.88	170	51	5	0	460.1	418	96	212	3	78		0	1,927	33	3.32	1.52	2.18	0.06	8.8	4.0	1.08		4.14	71	2.62	95	8.17	4.5
14	Will White W. White	30	1878	CIN	21	.588	52	52	1.79	169	52	5	0	468.0	477	93	249	1	45		0	1,939	40	3.25	0.87	3.76	0.02	8.7	2.3	1.12		4.79	82	2.13	97	9.17	-4.6
15	Jim Devlin J. Devlin	30	1876	LOU	35	.462	68	68	1.56	122	66	5	0	622.0	566	108	309	3	37		0	2,568	14	1.77	0.54	3.30	0.04	4.8	1.4	0.97		4.47	62	2.08	82	8.19	50.7
16	Matt Kilroy M. Kilroy	29	1886	BAL	34	.460	68	68	3.37	513	66	5	0	583.0	476	218	350	10	182	19	0	2,469	61	7.92	2.81	2.82	0.15	20.8	7.4	1.13	.267	5.40	100	2.60	77	7.35	47
17	George Derby G. Derby	29	1881	DET	26	.527	56	55	2.20	212	55	9	0	494.2	505	121	252	3	86		1	2,101	14	3.86	1.56	2.47	0.05	10.1	4.1	1.19		4.58	80	2.43	88	9.19	16.3
18	Terry Larkin T. Larkin	29	1877	HAR	25	.537	56	56	2.14	96	55	4	0	501.0	510	119	285	2	53		0	2,132	18	1.72	0.95	1.81	0.04	4.5	2.5	1.12		5.12	83	2.82	109	9.16	-28.5
19	Grover Alexander G. Alexander	28	1911	PHN	13	.683	48	37	2.57	227	31	7	3	367.0	285	105	133	5	129	8	11	1,440	4	5.57	3.16	1.76	0.12	15.8	9.0	1.13	.261	3.26	74	2.83	78	6.99	33.6
20	Joe McGinnity J. McGinnity	28	1899	BAL	16	.636	48	41	2.68	74	38	4	2	366.1	358	109	164	3	93	26	7	1,519	4	1.82	2.28	0.80	0.07	4.9	6.1	1.23	.268	4.03	70	3.61	94	8.80	9.5
21	Nig Cuppy N. Cuppy	28	1892	CLE	13	.683	47	42	2.51	103	38	1	1	376.0	333	105	175	9	121	10	5	1,591	6	2.47	2.90	0.85	0.22	6.5	7.6	1.21	.240	4.19	74	3.24	96	7.97	8
22	Billy Rhines B. Rhines	28	1890	CIN	17	.622	46	45	1.95	182	45	6	0	401.1	337	87	163	6	113	15	1	1,656	14	4.08	2.53	1.61	0.13	11.0	6.8	1.12	.247	3.66	55	3.16	83	7.56	29.2
23	Kid Nichols K. Nichols	27	1890	BSN	19	.587	48	47	2.23	222	47	7	0	424.0	374	105	175	8	112	11	1	1,755	30	4.71	2.38	1.98	0.17	12.6	6.4	1.15	.261	3.71	60	2.98	75	7.94	51
24	Lee Viau L. Viau	27	1888	CIN	14	.659	42	42	2.65	164	42	1	0	387.2	331	114	192	7	110	20	0	1,618	27	3.81	2.55	1.49	0.16	10.1	6.8	1.14	.246	4.46	85	2.98	99	7.68	2.4
25	Larry Cheney L. Cheney	26	1912	CHC	10	.722	42	37	2.85	140	28	4	0	303.1	262	96	122	5	111	7	4	1,267	18	4.15	3.29	1.26	0.15	11.0	8.8	1.23	.256	3.62	85	3.31	95	7.77	4.9